0.5pts

How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers want to test whether the average number of tissues used during a cold is less than 60 tissues.Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: X-bar = 52,s= 22. Suppose the desired significance level is 0.05. What is the critical value?

-1.96

+1.96

-1.645

+1.645

Question 4

How many Kleenex should the Kimberly Clark Corporation package of tissues contain? Researchers want to test whether the average number of tissues used during a cold is less than 60 tissues.Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: -bar = 52,s= 22. Suppose the test statistic does fall in the rejection region at

= 0.05. Which of the following conclusions is correct?

A) At alpha = 0.05, there is not sufficient evidence to conclude that the average number of tissues used during a cold is 60 tissues

B) At alpha = 0.05, there is sufficient evidence to conclude that the average number of tissues used during a cold is 60 tissues

C) At alpha = 0.05, there is not sufficient evidence to conclude that the average number of tissues used during a cold is less than 60 tissues.

D) At alpha = 0.05, there is sufficient evidence to conclude that the average number of tissues used during a cold is less than 60 tissues.